Sheet-metal receptacle



June 15 1926.

C. G. CARLSON SHEET METAL RECEPTACLE um W. ma JC s i H, d W w ma C ua Q www ff I A40 by the edge strips of thev chest.

Panarea Jim.' 15,- 192e.

UNITED STATES,

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l I cnmonn e. cAnLsoN, or smnsrown, Nnw Yonx.

snm-'umn nncmaotn.

appn'omon ma November a, ma. semi 1ro. 598,905,

This invention relates to an improvementV in a sheet metal receptacle and more articularly to a -double wall insulated s eet metal receptacle intended to be used as a 6 substitute for a cedar chest.

The use of a cedar chesthas man Y advantages but it also is open tothel objec ion that wood ofthe proper quality is not easy to l obtain; that a cedar chest is not a protec- 10- tion against tire and that it is impossible to finish a cedar chest to match furniture.

The chiefV object of this invention is to provide a double wall insulated sheet metal chest havin its compartment rovided with `A' et objectV of invention is-to provide a sheet vmetal'. receptacle which is 25 madenp of parts .which 'secured to ther and yetV 'are capable of n slight re ative movement-so that exposure to extreme heat l will` not4 cause itgto wa out of shape.

Furthermore, all parts oft e chest made in' 3 .accordance with this invention can be en- -Y tirely grained dueto the fatt` thattheside, .en andl panelsgcan be bind 'wi despu-uf um chest.

l Another object of thisQfinvention is 'the proee of making a which-'process comprises the'following my mola-the edges of ywhich are formed Second. After thein lation te porary forms are removed andthe in su ation 1s exposed to the air so that the surplus' moisture willevaporate, in' order to 45 hasten this step heat may be applied.

Following this, the outer panelsand inner lining are. secured to the edgle thus forming a double wall ins ated vreceptacleA in which there 4is 'no danger of l dampness due to the condition of the insulation.

Other o jects will appear upon examination of the following escrilion taken in connection with the annexed. awing which u forms apart thereof and in which later. y y i Theside, bottom and end panels are ofl has' set, ulestrips, v

Fig. 1 is a plan view 'of a chest embodying this invention.

Fig. 2 is a side elevation of such chest.

Fig. 3 is a horizontal cross section taken along the lines 3-3 of Fig. 2. Fig. 4. is a transversecross section taken along the lines 4 4 of Figs. 1 and 2.

Fig. 5' is an enlarged detail vshovvingthe mannerin 'which the panels are secured to the edge strips.

Fig. 6 isan-enlarged cross section of the j top of the box hhowing the manner in which the cover is mounted on the side walls.

Figs. 7 and 8 are detailed views illustrating the joining portions of the panels and edge strips; a d Fig. 9 is an enlarged view of. one of the edge strips and insulation before-the/panels are applied. Y

Re errin to the drawings, the numeral 10 is use d to esignate the chest embodying this ',invention. `This chest com rises .the edge strips 11, sideV panels 12, en panels- 13,- bottom panels .14, insulationl, and cover 16.

The edge strips 11 are preferably'made of channel form, suchas is shown. particularly in Fig. 5, both lateral edges of the bottom and side stri s being provided with the flanges 17 which are folded bac'k to form pockets 18. In the flanges 17 are a (plurality of slots 19 for the purpose to be eseribed thek same `general construction diifering merely in dimensions and for that reason only the side and end panels shown in vFi J, 5 willbedescribed in detail. These First: Insulation is poured 'into a 'tempoare provided. with ilasls -20 alo'ng eac edge which 'are madeof cient depth .to enter the pockets 18 'in the edgestrips. Stam b ed with the y enterthe s1otsl19, thus preventing the removal of the panels after they are once in place'fwithout, however, preventing a 0ertain weave between the panels and edge-l stri s, which may result from the exposure of -t `e chest toiire or other 'conditions The upper edge stri s 11 which for Vconvenience will hereafter referred to by the numeral 22, diier from the other strips previously described in formation by reason of the revision of ockets 18 along one lateral ge. only. e other lateral edge,

edge strips the tongues will which is adjacent the cover 16, is provided with a flange 23 bentat right angles to the flat portion 24.

The inner wall or lining of the chest preferably consists of a metal strip 25 which forms the sides and bottom of the compartment and two sheets 26 which form the ends. Referring to Fig. 3, it will be noted that the side edges of thelstrip 25 are flanged and that the sheets 26 rest against these flanges. These sheets 26 are preferably welded to the flanges 27 of the strip 25 but it is obvious that other means for connecting parts of the lining ma be employed if desired. T he upper edge o the side lining 25 at the rear of the box is bent at right angles to form the horizontal portion -28 and again at right angles to form the flange 29. This flange 29 bears directly against the portion 24 of the edge strip and the parts are preferably assembled by means of screws 30.

The upper edges of the end lining plates 26 and the upper edge of the strip 25 are formed in a similar manner with the eX- ception that the horizontal portion 31 is made shorter than the portion 28. The vertical part 32, however, corresponds eX- actly to the part I29. When the linings are assembled in the chest it will be noted that between the parts 32 and the portions 24 are formed pockets 33 in which are placed strips of packing 34. The screws 35 by which the linings are secured to the edge strips pass through this packing. At suitable intervals in the lining walls are provided openings 36 by which the screws may be reached and operated.

The cover 16 comprises an outer panel 37 having a short flange 38 along the rear side and longer flanges 39 along the ends and other side. The lining 40 of the cover is anged at 41 and suitably secured to the o uter panel 37, the flanges 41 resting against the flanges 38 and 39 so .as to prevent the entrance of any moisture between the parts. Resting on the portions 28 and 31 are strips 42 of asbestos which also act to prevent the entranceof any moisture between the cover and side walls and which, in addition, deaden the sound, and make the compartment air tight to protect the contents. The flanges 39 of the cover enter the pockets 33 and rest against the packing 34, thus providing a further seal. Anysuitable form of hinge 43 may be provided. Imbedded in the cover and projecting from the'lower rear edge of the cover are pins 47. Apertures in the lining 25 admit these pins when the cover is closed so as to prevent an unauthor-l ized lifting of the cover by removing the hinge pins. The pins 47 and the lock hold the cover so that it can only be raised by releasino' the lock.

In order to give the cedar odor, which is necessary to protect garments, a cedar board 48 is placed in the bottom of the chest. If desired, however, cedar shavings may be inserted behind the lining of the cover, or chest, and allowed to permeate the interior through vents, or holes, formed in the lining. It is also possible to provide a small box containing cedar oil which can be put in one corner of the compartment 4and which would provide the necessary odor.

Any suitable form of lock 49 may be used, the particular one here shown, is of the tumbler type. Projections from the. top are avoided by imbedding the handles 5() in the depressions 51 in the upper panel 37. ln order to permit of the easy moving of chest, casters 52 are secured to the bottom.

n making the chest the edge strips l1 are first rigidly secured together to form a skeleton frame-work: suitable inner and outer forms are now mounted between the strips and the insulation poured into the mold so formed and allowed to harden. After this has taken place, the temporary inner and outer forms are .removed and the excess 'moist-ure from the insulation permitted to evaporate by exposure to the air or heat may be applied to hasten the evaporation. This step in the process avoids one of the greatest objections to the use of insulation of this kind in a double wall receptacle, since unless the excess moisture is allowed toevaporate it will in time permeate the Walls and will not only cause the metal to corrode but will also discolor the outer walls and make the inner walls damp.

The outer faces ot the edge strips are now grained, in any desired manner, by machinery and at the same time the side, end and bottom panels are also grained by machinery, a step formerly impossible in a chest having depressed panels, which could only be grained by hand. After being previously grained, the panels are slipped into place, the tongues 21 entering the slots 19 and preventing their removal. It will, however, be noted that the flanges of the panels do not completely fill the pockets 18 so that a certain amount of relative movement between the panels and edge strips are permitted.

By reason of the construction above disclosed it is obvious that the connection between the panels and edge strips will prevent the parts from separating but will also permit warpage of certain parts without warpage of the entire chest, thus overcoming the great objection to the usual form of double wall chest in which the entire outer wall is formed into a single unit.

The insulating material is preferably of monolithic form consisting of a mixture of calcium Sulphate (plaster of Paris) and asbestos fibre in the ratio of per; cent and 30 per cent, respectively. In place of'this insulation, however, successive layers of as- 7 bestes paper may be em loyed. These layers are assembled with t e 'edge stripsin a manner similar to that described above Nbei'ore the side panels are inserted, or the panels could be assembled irst and asbestos 1nserted.

The cover `16 is formed by packing the insulation into the formed lining 40 allowing it to set and allowing the excess moisture to `evaporate before securing the outer panel 37. If desired, layers of asbestos paper may be used instead. The joinder of the lining to the outer walls around the cover opening will permit considerable warpage before the cover is thrown out of alignment so that it will not fully seal the box.

`While this chest has been described as having a cover at the top, where it is least exposed to fire and leastsubjected to the iniiuences of climatic changes, it is,l of course, obvious that the cover could be made on the side or end if desired. Moreover the cedar board 48, or other means-forv exhaling the f of the invention as odor of cedar, is not lessential to this invention and would be removed if thechest were to be used merely for a household safe. I

It is understood, however, that while the applicant has shown and described one embodiment of this invention he is not to be limited thereto since others may be made without departing from the spirit and scope set .forth in the' following claims.

, Having thus set forth my invention which I'claim as new and for which I desire the protection of Letters Patent is 1. A sheet metal double walled receptacle comprising edge strips rigidly joined together to form the frame work, said strips having reversed iianges yforming pockets plurality o slots in along the sides and a said langes, and panels iaving flanges which enter said pockets, the latter flanges being slotted to provide tongues which enter the slots in the strip anges and prevent separation of panels and strips.

2. Asheet metal' double walled receptaclev comprising ed e strips,` panels secured to `said strips, to orm the outer wall, a linin forming the inner wall removably secure lto the upper edge stri s, packing inserted Vstrips and second securing the panels -to said edge'strips. p

. 4. The process of making an insulated sheet metal receptacle consisting in casting the insulation in theA edge strips of the receptacle, allowing the moisture to evaporate from said insulation and then securing the side, end, and bottom panels to said edge strips.

In testimony whereof I have aixed my signature.

CLIFFORD'G. CARLSON. 

